Test emails, delivered to your code — not your inbox
A JSON API for receiving disposable email in automated tests: signup flows, OTP / verification codes, and QA pipelines. No inbox to check by hand.
Get started — free foreverNo credit card required.
✅ Included free on every plan — including Free:
- Unlimited namespaces
- Custom retention, any duration
- Unlimited teams
- Create namespaces & API keys from the API itself
- 1 custom domain included
- SMS add-on from $3/mo
- Visual mail viewer
How it works
We receive, store, and index your test emails so your code can pull them straight back out through the API.
Every account gets its own namespace, so your test traffic never collides with anyone else's — or with your own other projects. Send to {namespace}.{tag}@quickinbox.net and the {tag} can be anything: change it and you've got a brand-new address on the fly, with no limit on how many.
Query that mail back with a plain JSON API — see the docs for full reference and copy-paste examples. Use any HTTP client, in any language, including straight from a CI/CD pipeline.
Beyond the basics: custom retention per namespace (set it to whatever you need, on any plan), multiple API keys scoped to specific namespaces, a live-query mode that waits for the next email instead of polling, and a visual mail viewer in your dashboard for when you just want to look at a message by eye.
Sign up and get your API keyTakes about a minute.
Highlights
📚 Documentation and direct support
A full API reference with real examples, and a person — not a bot — on the other end of support@quickinbox.net when you get stuck.
🔑 Namespaces and keys built for teams of one or many projects
Create as many namespaces as you need and scope each API key to one of them, so a key used in staging can never touch production test data. Share a key with a teammate when a project needs more than one pair of hands on it.
🌐 Bring your own domain — free on every plan
Prefer mail.yourcompany.com over a quickinbox.net address? Every plan, including Free, includes one custom domain at no extra cost. Add it, verify it with a DNS record, and start receiving test mail on it right away.
🔔 Outbound webhooks — free on every plan
Stop polling. Point a namespace at your own server's URL and we'll POST the new message to it the instant mail arrives — included on every plan, including Free.
🔒 Secure by design
HTTPS is enforced on every request, data is encrypted in transit, and the whole API runs on Cloudflare's global network rather than a single server that can fall over.
Forever free: 5,000 emails/month.